$2$ points

Service operations are characterized by variability in order arrivals and order processing and "safety capacity" is utilized in dealing with this variability. Below table compares and contrasts features of "make$-$to$-$stock" and "make$-$to$-$order" operations. Fill in the blank equivalent to flow units for make$-$to$-$order operations.

$\backslash$table$[[$Policy$,$Type of operations,Flow units,resources$],[$Make$-$to$-$stock,Manufacturing in flow shop,Inflow of job orders,Resource unit$],[$Make$-$to$-$order,Processing at job shop,,server$]]$

$$ customer waiting time

bottleneck

customer arrivals

server utilization